ICD-10-CM > O00-O9A > O30-O48 > O43 > O43.1 > O43.11 O43.11 Circumvallate placenta Non-Billable/Non-Specific Codes O43.111Circumvallate placenta, first trimesterO43.112Circumvallate placenta, second trimesterO43.113Circumvallate placenta, third trimesterO43.119Circumvallate placenta, unspecified trimester